| DOI: | 10.2172/1167316
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| 报告号: | PNNL--23483
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| 报告题名: | Overview of different aspects of climate change effects on soils |
| 作者: | Qafoku, Nikolla P.
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| 出版年: | 2014
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| 发表日期: | 2014-08-01
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| 总页数: | 52
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | soils
; climate change
; C cycle
; soil acidification
; accelerated weathering
; weathering of soil minerals
; elemental cycling
; soil organic matter (SOM)
; SOM mineralization
; SOM protection
; SOM selective preservation
; SOM spatial inaccessibility
; SOM interactions with minerals.
|
| 中文主题词: | 土壤
; 碳
; 有机物
; 高温
; 保存
; 风化作用
; 二氧化碳
; 碳酸酯
; 有机碳
; 硅酸盐
; 矿物
|
| 主题词: | SOILS
; CARBON
; ORGANIC MATTER
; HEAT
; PRESERVATION
; WEATHERING
; CARBON DIOXIDE
; CARBONATE
; ORGANIC CARBON
; SILICATE
; MINERALS
|
| 英文摘要: | Climate change [i.e., high atmospheric carbon dioxide (CO2) concentrations (âĽ400 ppm); increasing air temperatures (2-4°C or greater); significant and/or abrupt changes in daily, seasonal, and inter-annual temperature; changes in the wet/dry cycles; intensive rainfall and/or heavy storms; extended periods of drought; extreme frost; heat waves and increased fire frequency] is and will significantly affect soil properties and fertility, water resources, food quantity and quality, and environmental quality. Biotic processes that consume atmospheric CO2 and create organic carbon (C) that is either reprocessed to CO2 or stored in soils, are the subject of active current investigations with great concern over the influence of climate change. In addition, abiotic C cycling and its influence on the inorganic C pool in soils is a fundamental global process in which acidic atmospheric CO2 participates in the weathering of carbonate and silicate minerals, ultimately delivering bicarbonate and Ca2+ or other cations that precipitate in the form of carbonates in soils or are transported to the rivers, lakes, and oceans. Soil responses to climate change will be complex, and there are many uncertainties and unresolved issues. The objective of the review is to initiate and further stimulate a discussion about some important and challenging aspects of climate-change effects on soils, such as accelerated weathering of soil minerals and resulting C and elemental fluxes in and out of soils, soil/geo-engineering methods used to increase C sequestration in soils, soil organic matter (SOM) protection, transformation and mineralization, and SOM temperature sensitivity. This review reports recent discoveries and identifies key research needs required to understand the effects of climate change on soils. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1167316
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41468
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| File Name/ File Size |
Content Type |
Version |
Access |
License |
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| 1167316.pdf（560KB） | 研究报告 | -- | 开放获取 | | View
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作者单位: | Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
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| Recommended Citation: | |
Qafoku, Nikolla P.. Overview of different aspects of climate change effects on soils. 2014-01-01.
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